SCOTT.GARDNER  Works great and very small processor footprint. I noticed that at least one preference doesn't stick: Show Docks window when launched, which shows even if it's unchecked. Also, MacUpdate is displaying the incorrect price. It's $14.99, not $10. A little pricey for what it does, but worth it if you need this functionality and appreciate a nice user interface (except the menu icon, which is not Snow-Leopard-like). It would be nice if it also maintained other Dock settings between Spaces, such as auto-hide status.  
(Version 2.0.2)

MTCOBRA  I tried updating Docks from within the program itself. The download proceeded normally, but then a rejection message appeared: Update Cancelled: Improper signature?? What gives? I've not tried just downloading from MU then 'replacing the older' version - I prefer to update from within the program.

The program won't accept the upgrade.  
(Version 2.0.2)

TESLANAUT  What does this offer that Dock Spaces does not offer?

Dock Spaces is Free compared to this 14.95 Shareware.  
(Version 1.0)